'use strict'; const common = require('../common'); const assert = require('assert'); const dgram = require('dgram'); const socket = dgram.createSocket('udp4'); socket.bind(common.PORT); socket.on('listening', function() { var result = socket.setTTL(16); assert.strictEqual(result, 16); assert.throws(function() { socket.setTTL('foo'); }, /Argument must be a number/); socket.close(); });